Network Sharing and Reverse Single Radio Voice Call Continuity

(19)

(11)

EP 2 704 486 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	18.03.2015 Bulletin 2015/12

(43)	Date of publication A2:
	05.03.2014 Bulletin 2014/10

(21)	Application number: 13162519.6

(22)	Date of filing: 05.04.2013

(51)

International Patent Classification (IPC):

H04W 36/14^(2009.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME

(30)

Priority:

11.04.2012 WO PCT/US2012/033003

(71)	Applicant: Nokia Solutions and Networks Oy
	02610 Espoo (FI)

(72)	Inventors:
	Wong, Curt Sammamish, WA Washington 98075 (US) Lahtinen, Lauri Kalevi 02650 Espoo (FI)

(74)	Representative: Borgström, Markus et al
	Nokia Solutions and Networks GmbH & Co. KG CEF T&I IPR / Patent Administration 80240 Munich 80240 Munich (DE)

(54)	Network Sharing and Reverse Single Radio Voice Call Continuity

(57) Certain networks can operate using circuit switched infrastructure, while other networks may operate using infrastructure for the long term evolution (LTE) of the third generation partnership project (3GPP). Devices can operate across the boundaries of these networks. Thus, such devices as well as the networks may benefit from network sharing in reverse single radio voice call continuity. For example, a method may include requesting handover of a user equipment from a source network to a target network. The method may also include providing a network identification corresponding to the source network while requesting the handover. Alternatively, or in addition, a method may include requesting handover of a user equipment from a source network to a target network. The method may also include determining the target network based on a network identification received previously.

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